Eek, jhanessy! It would be a bummer to go through the Buyer's Remorse process for camera quality, but my LGV10's camera is in heavy use with two kids, so it's an important feature to me, too. I'm sorry to say I don't have any third party camera apps to recommend -- editing after the fact is something I do more on Instagram than using the built-in editor but that's just because I post most photos for friends and family from that app. Were you able to find something that you liked better?
I Have The Lg Stylo 3 Plus And My Camra is Pretty Good. I WishI Could Help You Out With This Problem